these 2 derivations will be built:
  /nix/store/7xadd787gfdz9mkggqynxmp819dhldqp-harmonia-deps-3.3.0.drv
  /nix/store/wdsvcf1fg0cs9w2j43abzczpnncb4jlj-harmonia-llvm-cov-3.3.0.drv